Chapter 4 157
BDS & Specific action:
0x0
0Report the legacy boot is happening
0x1
2Wake up the APs
0x1
3Initialize SMM Private Data and relocate BSP SMBASE
0x2
1
0x2
7
PC init begin at the stage1
Report every memory range do the hard ware ECC init
0x2
8Report status code of every memory range
0x5
0Get the root bridge handle
0x5
1Notify pci bus driver starts to program the resource
0x5
8Reset the host controller
0x5A IdeBus begin initialization
0x7
0Simple Text Output Protocol Functions(VGA class reset)
0x7
1Report that VGA Class driver is being disabled
0x7
2Report that VGA Class driver is being enabled
0x7
8Terminal Console In reset and Console Out reset
0x7
9Report that the remote terminal is being disabled
0x7A Report that the remote terminal is being enabled
0x9
0Keyboard reset
0x9
1USB Keyboard disable
0x9
2Keyboard detection
0x9
3Report that the usb keyboard is being enabled
0x9
4Clear the keyboard buffer
0x9
5Init Keyboard
0x9
8Mouse reset